Printing-press attachment.



Patented Sept. ll, I900.

M. SNYDER. PRINTING PRESS ATTACHMENT.

INQZENTOH A TTOHNEYS (Application filed Apr. 2, 1 900.) (N o M o d a l.)

W/ T/VE SSE S UNTTnD STATES PATENT OFFICE.

MAX SNYDER, OF BEATTY, PENNSYLVANIA.

PRINTING-PRESS ATTACHMENT.

SPECIFICATION forming part of Letters Patent No. 657,796, dated September 11, 1900.

Application filed April 2| 1900. Serial No. 11,184. (No model.)

To all whom it may concern:

Be it known that 1, MAX SNYDER, a citizen of the United States, and a resident of Beatty, in the county of Vestmoreland and State of Pennsylvania, have invented a new and Improved Printing-Press Attachment, of which the following is a full, clear, and exact description.

The purpose of this invention is to provide a convenient means for placing the forms in position on upright or job-printing presses. l-Ieretofore this task has been one of considerable difficulty, and my invention comprehends a peculiarly-constructed device by which the form may be first placed on the platen and held there manually. Then by driving the press sufficiently to advance the platen to the form-holder the form may be engaged directly with the form-holder and held thereby.

This specification is the disclosure of several forms of the invention, while the claims define the actual scope thereof.

Reference is to be had to the accompanying drawings, forming apart of this specification, in which similar characters of reference indicate corresponding parts in all the views.

Figure 1 is a perspective View showing the use of the invention. Fig. 2 is a perspective view showing the invention separate from the press, and Fig. 3 is a perspective view of a modified form of the device.

My invention comprises side bars Ct, constructed, preferably, of wood and formed with rabbet-grooves a, in their adjacent sides, in which rabbet-grooves the side edges of the form may lie, as illustrated in Fig. 1. The side bars a are connected with each other by cross-bars Z), which, as shown in Fig. 2, are two in number disposed in the form of an X and extended between and fastened to the side bars a. The front ends of the side bars a are formed with hooks c, projected downward in position to engage with the front edge of the platen to hold the device from moving forwardly thereof, and the side bars a are provided at their outer side faces and approximately at their middles with downwardly-projected lugs d, which are adapted to engage with the side edges of the platen to prevent lateral movement of the device thereon.

In using the attachment the fingers of the platen are first thrown down thereon,as shown in Fig. 1, and my invention is then applied to the platen by engaging the hooks c with the front edges thereof and the lugs 01 with the side edges thereof. The cross-bars b then serve to hold the fingers down on the platen and out of position tointerfere with the op-' eration of placing the form in position. The

form may now be placed on the device, its side edges being engaged in the rabbetgrooves a of the side bars a. This done the operator should hold the form in place and start the movement of the press, so as to cause the platen to be advanced toward the form-holder. This movement should be continued until the form is engaged with the form-holder, whereupon it should be released by the operator and fastened to the formholder. My press attachment may then be disconnected from the platen and the work of printing carried on in the usual manner.

The form is held in the frame by the operator engaging his fingers with any convenient crevice in the form. It is well known that in printing-forms as usually set up such crevices exist, and by holding the form in this manner and advancing the platen toward the form-holder the form may be moved easily into the form-holder, and the operator may release his grip upon the form the instant previous to the engagement of the form with the form-holder.

Various changes in the form, proportions, and minor details of my invention maybe made without departing from the spirit and scope of my invention. In this connection I have shown in Fig. 3 a slight modification of the press attachment. The side bars a are of the same construction as shown in Fig. 2; but in place of the double cross-bars bin Fig. 2 I provide a single cross-bar I), which extends to and, if desired, may be formed integral with strips 11 which are fastened to the under sides of the side bars a. These strips 17 are formed at their front ends with hooks a, performing the functions of the hooks 0, previously described, and at their rear ends with lugs d, performing the functions of the lugs d, also previously described. Having thus described my invention, I claim as new and desire to secure by Letters Patent- 1. A printing-press attachment, adapted to be engaged with the platen of the printingpress to carry the form into position to be engaged by the form-holder, the attachment comprising side bars, cross-bars extending between them, and devices on the side bars for engaging the platen to hold the frame in position.

2. Aprinting-press attachment,comprising a frame adapted to be fastened to the platen of the printing-press, to carry the form into position for engagement with the form-holder, the attachment comprising side bars, crossbars extending between them, hooks fastened to the front ends of the side bars to engage the platen, and lugs projecting downward from the side bars to engage the side edges of the platen.

3. Aprinting-pressattachment,comprising a frame adapted to carry the form into position to be engaged with the form-holder, and means on the frame for holding it releasably engaged with the platen of the press.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

MAX SNYDER.

Witnesses: ALCUIN MAUCHER, EUGEN ERB. 

